Results of morphometric analysis
| Intracortical arborization | Layers I–IV | Layers V–VI | ||||
|---|---|---|---|---|---|---|
| NOR | BRL | NOR | BRL | NOR | BRL | |
| Intracortical arborization | ||||||
| Total axonal length (L) in μm | 17,022 ± 8057.7 | 21,555.7 ± 5632.1 | 12,274.5 ± 5858.7 | 14,152.8 ± 4777.7 | 2921 ± 2190.2 | 3744.9 ± 3036.7 |
| Total number of boutons (B) | 1233.9 ± 836 | 1336.3 ± 590.6 | 1057.7 ± 679.1 | 1112 ± 464.9 | 175 ± 207.2 | 198.3 ± 192 |
| Total number of branches (BR) | 209 ± 102.3 | 196.4 ± 40.7 | 167 ± 80.3 | 154.1 ± 38.2 | 33 ± 28.5 | 28.5 ± 19.9 |
| D = No. boutons/100 μm axonal length | 6.7 ± 1.9 | 5.9 ± 1.4 | 8 ± 2.2 | 7.9 ± 1.3 | 4.7 ± 2.1 | 3.9 ± 2.5 |
| Transmission compartment (0 + 1) | ||||||
| LT = L0 + L1 in μm | 13,940.3 ± 6632.1 | 16581.7 ± 5442.5 | 11,260.6 ± 5328.9 | 12,809.6 ± 4216.5 | 2624.7 ± 2064.1 | 3362.3 ± 2759.3 |
| B0 + B1 | 1195.9 ± 812 | 1289.1 ± 570.5 | 1026.4 ± 656.6 | 1076.8 ± 451.9 | 169.1 ± 205.2 | 193.9 ± 190.3 |
| BR0 + BR1 | 165.4 ± 77.9 | 155.7 ± 31.7 | 136.4 ± 62.9 | 127.6 ± 29.4 | 29.1 ± 25.1 | 25.9 ± 16.1 |
| L0 + L1/L (%) | 81.7 ± 3.8 | 75.6 ± 7.3 | 91.9 ± 1.5 | 90.9 ± 2.9 | 91.6 ± 10.7 | 92.5 ± 11.1 |
| B0 + B1/B (%) | 97.0 ± 1 | 96.6 ± 1.2 | 97.3 ± 1 | 96.9 ± 1.4 | 96.7 ± 3.8 | 94.6 ± 7.4 |
| BR0 + BR1/BR (%) | 79.5 ± 1.7 | 79.3 ± 0.9 | 82.5 ± 2.9 | 83 ± 3.2 | 91.5 ± 9.3 | 92.8 ± 7.5 |
| Conduction compartment (2 + 3 + 4) | ||||||
| LC = L2 + L3 + L4 in μm | 3019.6 ± 1471.1 | 4988.4 ± 1101.7 | 1014 ± 542.1 | 1342.6 ± 680.8 | 298.8 ± 320.3 | 398.1 ± 580.4 |
| B2 + B3 + B4 | 38 ± 25 | 48.3 ± 26.8 | 31.4 ± 23.6 | 35.4 ± 21.5 | 5.9 ± 6 | 5 ± 6.5 |
| BR2 + BR3 + BR4 | 43.3 ± 24.1 | 40.6 ± 9.3 | 31.4 ± 18.4 | 25.7 ± 10.7 | 3.9 ± 4.4 | 2.7 ± 2.8 |
| L2 + L3 + L4/L (%) | 18.1 ± 3.9 | 24.4 ± 7.3 | 8.1 ± 1.5 | 9.1 ± 2.9 | 8.6 ± 10.5 | 7.8 ± 12.1 |
| B2 + B3 + B4/B (%) | 3 ± 1 | 3.5 ± 1.1 | 2.7 ± 1.0 | 3.1 ± 1.4 | 3.3 ± 3.8 | 2.4 ± 2.9 |
| BR2 + BR3 + BR4/BR (%) | 20.4 ± 1.5 | 20.5 ± 1.1 | 18 ± 3.1 | 16.2 ± 2.8 | 8.5 ± 9.3 | 7.2 ± 7.5 |
| Tangential surfaces (μm2) | 63,880 ± 26,840 | 173,760 ± 55,000 | 54,057.1 ± 28,447.3 | 78,342.9 ± 75,960.5 | ||
| Surface of entrance in layer IV (μm2) SE | 2834.5 ± 3172.1 | 88,127 ± 111,554 | ||||
| Mediolateral extent (μm) | 441.7 ± 129.5 | 1360.4 ± 609.1 | 382.1 ± 224 | 1119.5 ± 548.3 | ||
Values are expressed as mean ± SD.